Design of microstructure in melt-textured bulk superconductors with the employment of granules containing ultra-fine Y2BaCuO5 particles

S. Nariki, N. Sakai, M. Murakami, I. Hirabayashi

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In melt-textured RE-Ba-Cu-O bulk superconductors, an excessive size reduction of RE211 inclusions results in inhomogeneous distribution of RE211 particles. To reduce such inhomogeneity, we attempted to combine granules containing fine RE211 into the melt-textured RE123 materials. First, we prepared Y-Ba-Cu-O granules containing Y123 and ultra-fine Y211 (0.1 μm in size) powders with organic binder. The size of the granules was about 1.0 mm. Next, Dy-Ba-Cu-O powders containing Dy123 and Dy211 (2 μm in size) were prepared. The Y-Ba-Cu-O granules and Dy-Ba-Cu-O powder were compacted together and melt-processed in air. We found that fine RE211 inclusions were uniformly distributed in this sample, which led to improved spatial homogeneity in critical currents.

Original languageEnglish
Pages (from-to)532-536
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25

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Keywords

  • Critical current density
  • Dy-Ba-Cu-O
  • Granular particle
  • Melt-textured bulk
  • Y-Ba-Cu-O

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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